Supermode noise suppression with mutual injection locking for coupled optoelectronic oscillator | Zendy

Jian Dai | Zendy; Anni Liu | Zendy; Jingliang Liu | Zendy; Tian Zhang | Zendy; Yue Zhou | Zendy; Feifei Yin | Zendy; Yitang Dai | Zendy; Yuanan Liu | Zendy; Kun Xu | Zendy

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Supermode noise suppression with mutual injection locking for coupled optoelectronic oscillator

Author(s) -

Jian Dai,

Anni Liu,

Jingliang Liu,

Tian Zhang,

Yue Zhou,

Feifei Yin,

Yitang Dai,

Yuanan Liu,

Kun Xu

Publication year - 2017

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.25.027060

Subject(s) - injection locking , phase noise , dbc , physics , oscillation (cell signaling) , local oscillator , optics , offset (computer science) , microwave , noise (video) , signal (programming language) , optoelectronics , computer science , laser , quantum mechanics , artificial intelligence , biology , image (mathematics) , genetics , programming language

The coupled optoelectronic oscillator (COEO) is typically used to generate high frequency spectrally pure microwave signal with serious sidemodes noise. We propose and experimentally demonstrate a simple scheme for supermode suppression with mutual injection locking between the COEO (master oscillator with multi-modes oscillation) and the embedded free-running oscillator (slave oscillator with single-mode oscillation). The master and slave oscillators share the same electrical feedback path, which means that the mutually injection-locked COEO brings no additional hardware complexity. Owing to the mode matching and mutually injection locking effect, 9.999 GHz signal has been successfully obtained by the mutually injection-locked COEO with the phase noise about -117 dBc/Hz at 10 kHz offset frequency. Besides, the supermode noise can be significantly suppressed more than 50 dB to below -120 dBc.

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